CN101790941A - Electric shear - Google Patents
Electric shear Download PDFInfo
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- CN101790941A CN101790941A CN201010106767A CN201010106767A CN101790941A CN 101790941 A CN101790941 A CN 101790941A CN 201010106767 A CN201010106767 A CN 201010106767A CN 201010106767 A CN201010106767 A CN 201010106767A CN 101790941 A CN101790941 A CN 101790941A
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- connecting rod
- blade
- sword
- driving shaft
- movable sword
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
- A01G3/08—Other tools for pruning, branching or delimbing standing trees
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
- A01G3/02—Secateurs; Flower or fruit shears
- A01G3/033—Secateurs; Flower or fruit shears having motor-driven blades
- A01G3/037—Secateurs; Flower or fruit shears having motor-driven blades the driving means being an electric motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B15/00—Hand-held shears with motor-driven blades
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Scissors And Nippers (AREA)
- Transmission Devices (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
Electric shear of the present invention possesses: first blade (2A, 2B), second blade (3A, 3B), elbow-bar mechanism (7A, 7B) and drive division (5,6).Elbow-bar mechanism (7A, 7B) has first connecting rod (71A, 71B), second connecting rod (72A, 72B) and driving shaft (70A, 70B).One end of first connecting rod rotatably is connected with the transfer part of first blade (21A, 21B).One end of second connecting rod rotatably is connected with the transfer part of second blade (31A, 31B).The other end of first connecting rod rotatably is connected on the other end of second connecting rod via described driving shaft.Described drive division makes described first blade and the described second blade folding by making the displacement on square with the axis direction of described driving shaft.
Description
Technical field
The present invention relates to a kind of electric shear that is used for pruning trees etc., its driving force by motor makes the blade folding and branch etc. is cut off object cut off.
Background technology
In the past, operations such as pollard were laborsaving by manual folding scissors in order to make personnel, proposed to make the blade folding by the driving force of motor and branch etc. is cut off the electric shear that object cuts off.
Electric shear has fixed blade and can be the movable sword of fulcrum rotation with the axle, as the type of drive of movable sword, structure that is known as link-type and the structure that is known as gear type is arranged.
In the electric shear of link-type, movable sword is that the wherein side at axle has blade and has the shape of arm at opposite side, for example constitutes " L " type.And, possess the ball-screw and the connecting rod that is used for the arm of attaching nut portion and movable sword that the spinning movement of motor are transformed to the linearly operating of nut portions.In this structure, the straight line of nut portions moves the arm that is passed to movable sword via connecting rod, and movable sword is that fulcrum is rotated (for example referring to patent documentation 1) with the axle.
Patent documentation 1: U.S. US5002135 communique
In the electric shear of gear type, movable sword is to be provided with the gear of circular arc with the coaxial mode of axle, and the spinning movement of motor passes to movable sword (for example referring to patent documentation 2) by the mechanism that combination helical gear and spur gear form.
Patent documentation 2: Japanese JP-A-11-128561 communique
In the electric shear of link-type, have and cut off the characteristic that moment of torsion reduces along with the closure of sword.Generally speaking, in the time of will cutting off the object cut-out with scissors, though when beginning closure, sword do not need bigger moment of torsion, along with the closure of sword, and need be than high pulling torque.
Therefore, in the electric shear of link-type, in order when sword is closed, to obtain required moment of torsion, can obtain to constitute, when sword begins closure, apply than high pulling torque than the mode of high pulling torque with the big outputization by motor etc.
Thus, the load that imposes on drive systems such as ball screw framework becomes big, and durability reduces.On the other hand, in order to improve durability, must make drive system form firm structure with the bigger load of reply, even the hand-held instrument that uses also is difficult to realize lightweight, device also maximizes, the operability variation.
In the electric shear of gear type, though irrelevant with the aperture of sword, can obtain certain moment of torsion all the time, the transverse tooth thickness that must increase gear is difficult to realize lightweight to bear bigger load, device maximizes.On the other hand, if the transverse tooth thickness of miniaturization and attenuate gear of device, then durability reduces.
Summary of the invention
According to more than one embodiment of the present invention, provide a kind of load that can not increase to obtain to cut off the electric shear that object cuts off required torque.
According to more than one embodiment of the present invention, the following formation of electric shear (1A, 1B), it possesses: first blade (2A, 2B), and it has tooth shape and becomes portion (20A, 20B) and transfer part (21A, 21B), and by supporting in the mode of axle (4A, 4B) as fulcrum rotation; Second blade (3A, 3B), it has tooth shape and becomes portion (30A, 30B) and transfer part (31A, 31B), and by making the closed cut-out object that cuts off between described first blade (2A, 2B) and second blade (3A, 3B) of described first blade (2A, 2B) and second blade (3A, 3B); Elbow-bar mechanism (7A, 7B), it has first connecting rod (71A, 71B), second connecting rod (72A, 72B) and driving shaft (70A, 70B); And drive division (5,6); One end of first connecting rod (71A, 71B) is connected in the mode that can rotate with the described transfer part (21A, 21B) of described first blade (2A, 2B); One end of described second connecting rod (72A, 72B) is connected in the mode that can rotate with the described transfer part (31A, 31B) of described second blade (3A, 3B); The other end of first connecting rod (71A, 71B) is connected in the other end of second connecting rod (72A, 72B) in the mode that can rotate via described driving shaft (70A, 70B); The direction displacement of described drive division (5,6) by described driving shaft (70A, 70B) is opened to the angle that described first connecting rod (71A, 71B) is become with described second connecting rod (72A, 72B) makes described first blade (2A, 2B) and described second blade (3A, 3B) closure; And, described first blade (2A, 2B) and described second blade (3A, 3B) are opened by making the direction displacement of the angle closure that described driving shaft (70A, 70B) become with described second connecting rod (72A, 72B) to described first connecting rod (71A, 71B).
Electric shear according to said structure, when make by elbow-bar mechanism driving axial with the driving shaft be angle that the first connecting rod of fulcrum flexing is become with second connecting rod open the direction displacement time, by being that the spinning movement of fulcrum makes first blade and the second blade closure with the axle.Along with make first connecting rod and the angle that second connecting rod is become open, make first blade and the second blade closure by elbow-bar mechanism, the cut-out power of generation increases.Thus, the action second half section in first blade and the second blade closure, can produce bigger cut-out moment of torsion.
Electric shear according to said structure, since branch etc. is cut off object need be when cutting off than the action second half section of the blade closure of high pulling torque, can produce bigger cut-out moment of torsion,, can obtain to cut off object and cut off required moment of torsion so needn't increase load.
Therefore, the load of drive system can be reduced to impose on, the miniaturization and that durability can realize drive system needn't be reduced.By making the drive system miniaturization and, also can implement device miniaturization and integrally, can improve the operability of the hand-held instrument that uses.
Described second blade (3A) can be by supporting in the mode of described axle (4A) as the fulcrum rotation.
Can followingly constitute, when described first blade (2A, 2B) and described second blade (3A, 3B) are closed to greatest extent, nearly 180 ° of the corner connection that described first connecting rod (71A, 71B) is become with described second connecting rod (72A, 72B).
Described drive division can have: the motor (5) that is rotated driving; And ball screw framework (6), its spinning movement with described motor is transformed to linearly operating, and passes to the described driving shaft of described elbow-bar mechanism.
Other features and effect can be known by record and claims of embodiment.
Description of drawings
Fig. 1 is the side sectional view of an example of the electric shear structure of expression first exemplary embodiments.
Fig. 2 is the side sectional view of an example of the electric shear structure of expression first exemplary embodiments.
Fig. 3 is the curve map that expression produces moment of torsion and cuts off the relation between the required torque.
Fig. 4 is the side sectional view of an example of the electric shear structure of expression second exemplary embodiments.
Fig. 5 is the side sectional view of an example of the electric shear structure of expression second exemplary embodiments.
Description of reference numerals
1A, 1B electric shear
The 2A first movable sword
The movable sword of 2B
The 3A second movable sword
The 3B fixed blade
4A, 4B axle
5 motors
6 ball screw frameworks
7A, 7B elbow-bar mechanism
70A, 70B driving shaft
71A, 71B first connecting rod
72A, 72B second connecting rod
Embodiment
Followingly describe with reference to the exemplary embodiments of accompanying drawing to electric shear of the present invention.
The structure example of the electric shear of＜the first exemplary embodiments 〉
Fig. 1 and Fig. 2 are the side sectional views of an example of the electric shear structure of expression first exemplary embodiments, and Fig. 1 represents the state that sword is opened, and Fig. 2 represents the state of sword closure.
Among the electric shear 1A of first exemplary embodiments, the first movable sword 2A and the second movable sword 3A are respectively by can being that the mode of fulcrum rotation supports with axle 4A.
Among the electric shear 1A, by ball screw framework 6 spinning movement of motor 5 is transformed to linearly operating, the driving force that will be transformed to the motor 5 of linearly operating by elbow-bar mechanism 7A passes to the first movable sword 2A and the second movable sword 3A, by being that the spinning movement of fulcrum makes the first movable sword 2A and the second movable sword 3A folding with axle 4A.
Among the electric shear 1A, axle 4A is supported on the framework 8A, and moving by framework 8A guiding ball screw framework 6 and elbow-bar mechanism 7A.Above-mentioned each part of electro-motor 1A is installed in the housing 9, and the person of being to use can hand the form that housing 9 carries out operation.
Below the detailed content of each part is described.The first movable sword 2A is an example of first blade, and across the Support Position of axle 4A and therein a side is provided with tooth shape and becomes the 20A of portion, is provided with the sword arm 21A as transfer part that the dihedral that becomes the 20A of portion to be become with tooth shape becomes the regulation obtuse angle at opposite side.Become 20A of portion and sword arm 21A though the first movable sword 2A can constitute tooth shape integratedly, become the 20A of portion, preferably constitute tooth shape and become 20A of portion and sword arm 21A with part independently in order to change easily tooth shape.
The second movable sword 3A is an example of second blade, and across the Support Position of axle 4A and therein a side is provided with tooth shape and becomes the 30A of portion, is provided with the sword arm 31A as transfer part that the dihedral that becomes the 30A of portion to be become with tooth shape becomes the regulation obtuse angle at opposite side.With the first movable sword 2A in the same manner, become 30A of portion and sword arm 31A though the second movable sword 3A can constitute tooth shape integratedly, become the 30A of portion in order to change easily tooth shape, preferably constitute tooth shape and become 30A of portion and sword arm 31A with part independently.
The first movable sword 2A and the second movable sword 3A, are installed on axle 4A on the framework 8A by accessory 40A is installed at the form that becomes 20A of portion and tooth shape to become the 30A of portion to expose from housing 9 with tooth shape.The first movable sword 2A and the second movable sword 3A form following structure: can change tooth shape by the mounting or dismounting that accessory 40A and axle 4A are installed and become the 20A of portion, 30A.
In the ball screw framework 6, the axis of guide 62 that is arranged on the nut portions 61 is inserted in the gathering sill 80 that is arranged on the framework 8A with the direction parallel with lead screw shaft 60.Ball screw framework 6, when lead screw shaft 60 was driven in rotation, restriction was the rotation of the nut portions 61 of fulcrum with lead screw shaft 60 to the axis of guide 62 by gathering sill 80 guiding, nut portions 61 moves along lead screw shaft 60 straight lines.
Thus, ball screw framework 6 is transformed to the linearly operating of nut portions 61 with the spinning movement of motor 5, and the direction of rotation of corresponding motor 5 is switched the moving direction of nut portions 61.
Elbow-bar mechanism 7A possesses first connecting rod 71A and the second connecting rod 72A that is rotatably connected by driving shaft 70A.The sword arm 21A of one of them end of the first connecting rod 71A of elbow-bar mechanism 7A and the first movable sword 2A is can being that the mode of fulcrum rotation connects with axle 73A.And the sword arm 31A of one of them end of second connecting rod 72A and the second movable sword 3A is can being that the mode of fulcrum rotation connects with axle 74A.In addition, another end of first connecting rod 71A and another end of second connecting rod 72A are can being that the mode of fulcrum rotation connects with driving shaft 79A.
Among the elbow-bar mechanism 7A, the sword arm 21A of the first movable sword 2A and first connecting rod 71A are the forms in the coupling part of axle 73A flexing, and the sword arm 31A of the second movable sword 3A and second connecting rod 72A are the forms in the coupling part of axle 74A flexing.In addition, first connecting rod 71A and second connecting rod 72A are the forms in the coupling part of driving shaft 70A flexing.
The driving shaft 70A of elbow-bar mechanism 7A is guided by the gathering sill 80 of framework 8A, and is supported in the mode that can move on the direction that is parallel to lead screw shaft 60.The driving shaft 70A of elbow-bar mechanism 7A is connected on the nut portions 61 by transferring elements 75, and with by ball screw framework 6 spinning movement of motor 5 is transformed into nut portions 61 interlocks of linearly operating and straight line moves.
The first movable sword 2A and the second movable sword 3A be by being that folding is carried out in the spinning movement of fulcrum with axle 4A, and the direction rotation of opening by the angle that the sword arm 21A to the first movable sword 2A is become with the sword arm 31A of the second movable sword 3A and closed.
Among the elbow-bar mechanism 7A, formed first connecting rod 71A and second connecting rod 72A in the form of the coupling part of driving shaft 70A flexing, with the driving shaft 70A that straight line moves with the action interlock of the first movable sword 2A and the second movable sword 3A closure be fulcrum, the direction rotation of opening to the angle that first connecting rod 71A is become with second connecting rod 72A.And the size of following definite each several part and angle are so that nearly 180 ° of first connecting rod 71A is become with second connecting rod 72A when closed with the first movable sword 2A and the second movable sword 3A corner connection.In addition, if the angle that become with second connecting rod 72A of first connecting rod 71A surpasses 180 °, then the direction of opening to the first movable sword 2A and the second movable sword 3A is rotated, and constitutes so the angle that is become with second connecting rod 72A with first connecting rod 71A is no more than 180 ° mode.
Among the electric shear 1A, auxiliary trigger 12 is not operated, under the state that first switch 11 disconnects, restriction projection 12b is limited on the main trigger 14, to limit the operation of main trigger 14.
When making auxiliary trigger 12 be indexed to the position of first switch, 11 connections when auxiliary trigger 12 is operated, power connection, and restriction projection 12b separates with main trigger 14.Thus, can operate main trigger 14.So when under the state after auxiliary trigger 12 is operated main trigger 14 being operated, by the second switch 13 outputs control signal corresponding with direction of rotation, rotation amount and the rotary speed of main trigger 14, and motor 5 is controlled in the action of corresponding main trigger 14.
The action example of the electro-motor of＜the first exemplary embodiments 〉
Then, with reference to each figure the action of the electric shear 1A of first exemplary embodiments is described.The user hands housing 9, and auxiliary trigger 12 is operated, and makes auxiliary trigger 12 be indexed to the position that first switch 11 is connected.Thus, in electro-motor 1A, power connection, and limit projection 12b and separate with main trigger 14, can operate main trigger 14.
Under the state of user after auxiliary trigger 12 is operated main trigger 14 is operated.In electric shear 1A, by the second switch 13 outputs control signal corresponding with direction of rotation, rotation amount and the rotary speed of main trigger 14, and the action of corresponding main trigger 14 control motor 5.
When the direction that makes motor 5 to the first movable sword 2A and the second movable sword 3A closure was rotated driving, according to the direction of rotation of lead screw shaft 60, nut portions 61 moved to the direction straight line of arrow F1.
Drive and make nut portions 61 when the direction straight line of arrow F 1 moves when motor 5 is rotated to prescribed direction, the driving shaft 70A of the elbow-bar mechanism 7A that is connected with nut portions 61 by transferring elements 75 is that the direction straight line of arrow F1 moves to the direction near the 4A of the first movable sword 2A and the second movable sword 3A.
The displacement that the straight line based on driving shaft 70A of elbow-bar mechanism 7A moves passes to the first movable sword 2A by first connecting rod 71A, and passes to the second movable sword 3A by second connecting rod 72A.
As shown in Figure 1, the state of opening from the first movable sword 2A and the second movable sword 3A as the driving shaft 70A of elbow-bar mechanism 7A is when the direction straight line of arrow F 1 moves, first connecting rod 71A and second connecting rod 72A have been formed, the direction rotation that the driving shaft 70A that moves with straight line is fulcrum, open to the angle that first connecting rod 71A is become with second connecting rod 72A in the form of the coupling part of driving shaft 70A flexing.
First connecting rod 71A is connected in the first movable sword 2A on the sword arm 21A and second connecting rod 72A and is connected in the second movable sword 3A on the sword arm 31A, is the direction rotation that fulcrum is opened to the angle that sword arm 21A is become with sword arm 31A with axle 4A.When the direction of opening when the angle that is become with sword arm 31A to sword arm 21A is rotated, the first movable sword 2A and the second movable sword 3A closure.
When the first movable sword 2A and the second movable sword 3A are closed, become the nearly 180 ° state of corner connection that first connecting rod 71A is become with second connecting rod 72A.In elbow-bar mechanism 7A, along with making the first movable sword 2A and the second movable sword 3A closure, first connecting rod 71A and second connecting rod 72A angulation are near 180 °, and first connecting rod 71A and second connecting rod 72A are near the form that is arranged on the straight line thus.
Thus, compare with the state of the beginning closure of the second movable sword 3A with the first movable sword 2A shown in Figure 1, under the first movable sword 2A and the state after the second movable sword 3A closure shown in Figure 2, the cut-out power that becomes the 20A of portion to become the 30A of portion to produce with the tooth shape of the second movable sword 3A by the tooth shape of the first movable sword 2A increases.
When the direction that motor 5 is opened to the first movable sword 2A and the second movable sword 3A is rotated when driving, according to the direction of rotation of lead screw shaft 60, nut portions 61 moves to the direction straight line of arrow F2.
Drive and make nut portions 61 when the direction straight line of arrow F2 moves when the rightabout that makes motor 5 to regulation is rotated, the driving shaft 70A of elbow-bar mechanism 7A is that the direction straight line of arrow F2 moves to the direction away from the 4A of the first movable sword 2A and the second movable sword 3A.
As shown in Figure 2, when the driving shaft 70A of elbow-bar mechanism 7A from the state of the first movable sword 2A and the second movable sword 3A closure when the direction straight line of arrow F2 moves, the direction rotation of the angle closure that the driving shaft 70A that first connecting rod 71A and second connecting rod 72A move with straight line is fulcrum, become with second connecting rod 72A to first connecting rod 71A.
First connecting rod 71A is connected in the first movable sword 2A on the sword arm 21A and second connecting rod 72A and is connected in the second movable sword 3A on the sword arm 31A, with the direction rotation of the axle 4A angle closure that to be fulcrum become with sword arm 31A to sword arm 21A.When the direction of the angle closure that is become with sword arm 31A to sword arm 21A was rotated, the first movable sword 2A and the second movable sword 3A opened.
Fig. 3 is the curve map that expression produces moment of torsion and cuts off the relation between the required moment of torsion.In the electric shear 1A shown in Fig. 1 waits, the relation between the angle of representing to suppose to use electric shear 1A to cut off the required moment of torsion of a certain diameter branch and the first movable sword 2A and the second movable sword 3A with solid line.In addition, be represented by dotted lines the angle of the first movable sword 2A and the second movable sword 3A and the relation between the generation moment of torsion.
In Fig. 3, the longitudinal axis is represented moment of torsion, and transverse axis is represented basil degree.Basil degree=0 (°), as shown in Figure 1, the state that the expression first movable sword 2A and the second movable sword 3A open; Basil degree A (°), as shown in Figure 2, the state of the expression first movable sword 2A and the second movable sword 3A closure.In addition, basil 1/2A (°), as shown in Figure 1, half state of expression first movable sword 2A and second movable sword 3A closure.
When cutting off the branch of a certain diameter, when beginning closure, sword do not need high pulling torque, need than high pulling torque under the state of sword closure about 3/4.The branch diameter of supposing to use electric shear as φ 20 (mm) about, then irrelevant with diameter, have identical tendency.
On the other hand, in the electric shear 1A of first exemplary embodiments of using elbow-bar mechanism 7A, compare with the beginning closure state of the second movable sword 3A, can judge with the first movable sword 2A, first can along with making
The sword 2A and the second movable sword 3A closure, producing moment of torsion increases.
Therefore, in the electric shear 1A of first exemplary embodiments of using elbow-bar mechanism 7A, when cutting off branch, need can produce required enough moments of torsion than the first movable sword 2A of high pulling torque and the action second half section of the second movable sword 3A closure.
By using elbow-bar mechanism 7A, can produce and cut off the required enough moments of torsion of branch, thereby can correspondingly cut off the actual required moment of torsion of branch, the output that suppresses motor 5 is the output of ball screw framework 6.
Particularly, if the output of drive division is set at identical in the past, then by using toggle link 7A, can reach maximum about 2 times the cut-out power cutting off load of branch, even thereby the output of motor 5 or ball screw framework 6 is set at about 1/2, also can obtain the cut-out power that branch can be cut off.
Therefore, the output of motor 5 and ball screw framework 6 can be suppressed, the durability of ball screw framework 6 grades can be improved.And, by suppressing the output of motor 5 and ball screw framework 6, can realize the miniaturization of ball screw framework 6 grades.If can make ball screw framework 6 miniaturizations such as grade, then the housing that also user can be handed designs carefullyyer, can improve operability.In addition, owing to can suppress the output of motor 5 and ball screw framework 6,, can also pass through miniaturization, the lightweight of the realization accumulatoies such as number reduction of accumulator so can reduce the voltage of the accumulator of CD-ROM drive motor 5.
Among the electric shear 1A of first exemplary embodiments, the first movable sword 2A and the second movable sword 3A both sides are all movable.With will be wherein a side be set at movable sword, structure that the opposing party is set at fixed blade compares, and is identical as if the open angle of sword, and the anglec of rotation of sword closure is got final product for half.Therefore, being set at output identical, ball screw framework at the nut portions amount of movement that lead screw shaft is whenever turned around is set under the identical situation, compare with the situation that single-blade drives, the stroke that can make ball screw framework 6 can be realized the miniaturization of length direction for about half.
The structure example of the electric shear of＜the second exemplary embodiments 〉
Fig. 4 and Fig. 5 are the side sectional views of an example of the electric shear structure of expression second exemplary embodiments, and Fig. 4 represents the state that sword is opened, and Fig. 5 represents the state of sword closure.In addition, in Fig. 4 and Fig. 5, illustrate the mechanism that drives sword in the electric shear, omitted the diagram of housing and operating portion etc.
The electric shear 1B of second exemplary embodiments has movable sword 2B and fixed blade 3B, and movable sword 2B is by can being that the mode of fulcrum rotation supports with axle 4B.
Among the electric shear 1B, by ball screw framework 6 spinning movement of motor 5 is transformed to linearly operating, the driving force that will be transformed to the motor 5 of linearly operating by elbow-bar mechanism 7B passes to movable sword 2B, by being that the spinning movement of fulcrum makes movable sword 2B folding with axle 4B.
Below the detailed content of each part is described.Movable sword 2B is an example of first blade, and across the Support Position of axle 4B and therein a side is provided with tooth shape and becomes the 20B of portion, is provided with the sword arm 21B as transfer part that the dihedral that becomes the 20B of portion to be become with tooth shape becomes the regulation obtuse angle at opposite side.Movable sword 2B can constitute tooth shape integratedly and become 20B of portion and sword arm 21B, also can be made of part independently.
The driving shaft of motor 5 for example is connected on the decelerator 50 that has used planetary gear.Ball screw framework 6 possesses lead screw shaft 60 and the nut portions 61 on the output shaft that is connected in decelerator 50, be assembled with the not shown ball in the leading screw groove that is accommodated in lead screw shaft 60 in this nut portions 61, and when lead screw shaft 60 is driven in rotation, move along lead screw shaft 60 straight lines.
Elbow-bar mechanism 7B possesses first connecting rod 71B and the second connecting rod 72B that is rotatably connected by driving shaft 70B.The sword arm 21B of one of them end of the first connecting rod 71B of elbow-bar mechanism 7B and movable sword 2B is can being that the mode of fulcrum rotation connects with axle 73B.And the sword arm 31B of one of them end of second connecting rod 72B and fixed blade 3B is can being that the mode of fulcrum rotation connects with axle 74B.In addition, another end of first connecting rod 71B and another end of second connecting rod 72B are can being that the mode of fulcrum rotation connects with driving shaft 79B.
The driving shaft 70B of elbow-bar mechanism 7B is connected on the nut portions 61 by transferring elements 75, and with by ball screw framework 6 spinning movement of motor 5 is transformed into nut portions 61 interlocks of linearly operating and straight line moves.
Among the elbow-bar mechanism 7B, formed first connecting rod 71B and second connecting rod 72B in the form of the coupling part of driving shaft 70B flexing, with the driving shaft 70B that straight line moves with the action interlock of movable sword 2B closure be fulcrum, the direction rotation of opening to the angle that first connecting rod 71B is become with second connecting rod 72B.And the size of following definite each several part and angle are so that nearly 180 ° of first connecting rod 71B is become with second connecting rod 72B when closed with movable sword 2B corner connection.
The action example of the electro-motor of＜the second exemplary embodiments 〉
Then, with reference to each figure the action of the electric shear 1B of second exemplary embodiments is described.When the direction that makes motor 5 to movable sword 2B closure was rotated driving, according to the direction of rotation of lead screw shaft 60, nut portions 61 moved to the direction straight line of arrow F1.
Drive and make nut portions 61 when the direction straight line of arrow F 1 moves when motor 5 is rotated to prescribed direction, the driving shaft 70B of the elbow-bar mechanism 7B that is connected with nut portions 61 by transferring elements 75 is to moving near the movable direction straight line of the 4B of sword 2B.The displacement that the straight line based on driving shaft 70B of elbow-bar mechanism 7B moves passes to movable sword 2B by first connecting rod 71B.
As shown in Figure 4, when the state straight line of opening from movable sword 2B as the driving shaft 70B of elbow-bar mechanism 7B moves, first connecting rod 71B and second connecting rod 72B have been formed, the direction rotation that the driving shaft 70B that moves with straight line is fulcrum, open to the angle that first connecting rod 71B is become with second connecting rod 72B in the form of the coupling part of driving shaft 70B flexing.
First connecting rod 71B is connected in the movable sword 2B on the sword arm 21B, is the direction rotation that fulcrum is opened to the angle that sword arm 21B is become with sword arm 31B with axle 4B.When the direction of opening when the angle that is become with sword arm 31B to sword arm 21B is rotated, movable sword 2B and fixed blade 3B closure.
When movable sword 2B is closed, become the nearly 180 ° state of corner connection that first connecting rod 71B is become with second connecting rod 72B.In elbow-bar mechanism 7B, along with making movable sword 2B closure, first connecting rod 71B and second connecting rod 72B angulation are near 180 °, and first connecting rod 71B and second connecting rod 72B are near the form that is arranged on the straight line thus.
Thus, compare with the beginning closure state of movable sword 2B shown in Figure 4, under the state after the movable sword 2B closure shown in Figure 5, the cut-out power that becomes the 20B of portion to become the 30B of portion to produce with the tooth shape of fixed blade 3B by the tooth shape of movable sword 2B increases.
When the direction that motor 5 is opened to movable sword 2B was rotated driving, according to the direction of rotation of lead screw shaft 60, nut portions 61 moved to the direction straight line of arrow F2.
Drive and make nut portions 61 when the direction straight line of arrow F2 moves when the rightabout that makes motor 5 to regulation is rotated, the driving shaft 70B of the elbow-bar mechanism 7B that is connected with nut portions 61 by transferring elements 75 is to moving away from the movable direction straight line of the 4B of sword 2B.
As shown in Figure 5, when the driving shaft 70B of elbow-bar mechanism 7B when the state straight line of movable sword 2B closure moves, the direction rotation of the angle closure that first connecting rod 71B that has formed in the form of the coupling part of driving shaft 70B flexing and the driving shaft 70B that second connecting rod 72B moves with straight line be fulcrum, become with second connecting rod 72B to first connecting rod 71B.
First connecting rod 71B is connected in movable sword 2B on the sword arm 21B with the direction rotation of the axle 4B angle closure that to be fulcrum become with sword arm 31B to sword arm 21B.When the direction of the angle closure that is become with sword arm 31B to sword arm 21B was rotated, movable sword 2B and fixed blade 3B opened.
Though understand the present invention in detail with reference to specific embodiment, to those skilled in the art, obviously can under the situation that does not break away from purport of the present invention and scope, carry out various changes or correction.
For example, in above-mentioned exemplary embodiments, as the drive division that is used to make driving shaft 70A, 70B displacement on the rectilinear direction vertical with direction of principal axis, example have a mechanism of motor 5 and ball screw framework 6.But, as being used for rotatablely moving of motor 5 is transformed into straight-line structure, can adopt the known construction except ball-screw.In addition, as drive division, also can replace the combination of motor 5 and ball screw framework 6 and adopt mechanisms such as o actuator and linear motor.
Claims (5)
1. an electric shear (1A, 1B), its following formation,
It possesses: first blade (2A, 2B), and it has tooth shape and becomes portion (20A, 20B) and transfer part (21A, 21B), and by supporting in the mode of axle (4A, 4B) as fulcrum rotation; Second blade (3A, 3B), it has tooth shape and becomes portion (30A, 30B) and transfer part (31A, 31B), and by making the closed cut-out object that cuts off between described first blade (2A, 2B) and second blade (3A, 3B) of described first blade (2A, 2B) and second blade (3A, 3B); Elbow-bar mechanism (7A, 7B), it has first connecting rod (71A, 71B), second connecting rod (72A, 72B) and driving shaft (70A, 70B); And drive division (5,6);
One end of first connecting rod (71A, 71B) is connected in the mode that can rotate with the described transfer part (21A, 21B) of described first blade (2A, 2B);
One end of second connecting rod (72A, 72B) is connected in the mode that can rotate with the described transfer part (31A, 31B) of described second blade (3A, 3B);
The other end of first connecting rod (71A, 71B) is connected in the other end of second connecting rod (72A, 72B) in the mode that can rotate via described driving shaft (70A, 70B);
The direction displacement of described drive division (5,6) by described driving shaft (70A, 70B) is opened to the angle that described first connecting rod (71A, 71B) is become with described second connecting rod (72A, 72B) makes described first blade (2A, 2B) and described second blade (3A, 3B) closure; And,, described first blade (2A, 2B) and described second blade (3A, 3B) are opened by making the direction displacement of the angle closure that described driving shaft (70A, 70B) become with described second connecting rod (72A, 72B) to described first connecting rod (71A, 71B).
2. electric shear according to claim 1, wherein,
Described second blade (3A) is by supporting in the mode of described axle (4A) as the fulcrum rotation.
3. electric shear according to claim 1 and 2, wherein,
When described first blade (2A, 2B) and described second blade (3A, 3B) are closed to greatest extent, nearly 180 ° of the corner connection that described first connecting rod (71A, 71B) is become with described second connecting rod (72A, 72B).
4. electric shear according to claim 1 and 2, wherein,
Described drive division has:
Be rotated the motor (5) of driving; And
Ball screw framework (6), its spinning movement with described motor (5) is transformed to linearly operating, and passes to the described driving shaft (70A, 70B) of described elbow-bar mechanism (7A, 7B).
5. electric shear according to claim 3, wherein,
Described drive division has:
Be rotated the motor (5) of driving; And
Ball screw framework (6), its spinning movement with described motor (5) is transformed to linearly operating, and passes to the described driving shaft (70A, 70B) of described elbow-bar mechanism (7A, 7B).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009020890A JP5332662B2 (en) | 2009-01-30 | 2009-01-30 | Electric scissors |
| JP2009-020890 | 2009-01-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101790941A true CN101790941A (en) | 2010-08-04 |
| CN101790941B CN101790941B (en) | 2014-12-17 |
Family
ID=42122761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010106767.4A Active CN101790941B (en) | 2009-01-30 | 2010-01-29 | Electric scissors |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US20100192383A1 (en) |
| EP (1) | EP2213426B1 (en) |
| JP (1) | JP5332662B2 (en) |
| CN (1) | CN101790941B (en) |
| ES (1) | ES2544454T3 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108605557A (en) * | 2018-05-09 | 2018-10-02 | 上海工程技术大学 | A kind of one hand electric gardening scissors |
| CN108605557B (en) * | 2018-05-09 | 2021-03-26 | 上海工程技术大学 | Single-hand electric gardening scissors |
| TWI801700B (en) * | 2018-12-26 | 2023-05-11 | 日商永木精機股份有限公司 | A tool for cutting or holding an object |
| CN111788953A (en) * | 2020-07-27 | 2020-10-20 | 中山庆琏金属制品有限公司 | Electric scissors |
| CN112514674A (en) * | 2021-01-12 | 2021-03-19 | 东莞市嘉航实业有限公司 | Electric scissors double-link double-knife driving mechanism and electric scissors thereof |
| CN112514674B (en) * | 2021-01-12 | 2024-09-17 | 东莞市嘉航实业有限公司 | Double-connecting-rod double-cutter driving mechanism of electric shears and electric shears thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010172622A (en) | 2010-08-12 |
| JP5332662B2 (en) | 2013-11-06 |
| EP2213426B1 (en) | 2015-05-27 |
| US9832936B2 (en) | 2017-12-05 |
| EP2213426A1 (en) | 2010-08-04 |
| US20100192383A1 (en) | 2010-08-05 |
| US20130247384A1 (en) | 2013-09-26 |
| ES2544454T3 (en) | 2015-08-31 |
| CN101790941B (en) | 2014-12-17 |
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